Record number :
912650
Title of article :
J/ψ and ψ′ total cross sections and formation times from data for charmonium suppression in pA collisions
Author/Authors :
Y.B. He، نويسنده , , J. Hufner، نويسنده , , B.Z. Kopeliovich، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
6
From page :
93
To page :
98
Abstract :
The recent data for E866 on the xF dependence for charmonium suppression in pA collisions at 800 GeV are analyzed using a time- and energy-dependent preformed charmonium absorption cross section. For charmonium-nucleon c.m. energy 10 GeV the initially produced premeson has an absorption cross section of σpr≃3 mb. At the same energy but for the developed charmonium states one deduces for the total cross sections σtotJ/ψN=(2.8±0.3) mb, σtotψ′N=(10.5±3.6) mb. The date are compatible with a formation time τ1/2=0.6 fm/c in the rest frame of the charmonium.
Journal title :
PHYSICS LETTERS B
Serial Year :
2000
Link To Document :
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